17 September 2026
The U.S. online casino market generated $7.09 billion in revenue through the first seven months of 2026, marking an 18.3% year-over-year increase from the $6.00 billion figure for the same period in 2025. Fueled by continued growth in core states and the rise of mobile-first platforms, the seven-state legal market is on pace to average more than $1 billion in gross gaming revenue per month for the full year.
The momentum shows no signs of abating. In June 2026 alone, the seven legal states brought in $925.3 million, up from $770.1 million in June 2025. That monthly revenue figure has been consistent in the past several months, indicating sustained growth rather than a one-time spike.
Which markets are driving the growth?
Notably, some of the larger markets outpaced that overall 18.3% growth rate in the first seven months of 2026. Pennsylvania led the way with $2.20 billion, a figure that is likely to keep pacing ahead of other states. Michigan was close behind with $2.11 billion, and New Jersey posted $1.87 billion. These three states account for nearly two-thirds of the total $7.09 billion in revenue through July.
However, a few smaller states grew even faster in the first half of the year. West Virginia posted the fastest year-over-year growth rate, rising 56.5% to $314.2 million in gross gaming revenue. Delaware was close behind, with a 52.5% increase to $105.5 million. Rhode Island grew 40.5% to $42.7 million.
On the other end of the spectrum, monthly figures from June 2026 highlight the established stars of online gambling in the United States. Michigan brought in $301.2 million in iGaming gross receipts, marking the fourth straight month the state was above the $300 million mark. New Jersey's internet gaming win was $271 million, nearly 20% higher than June 2025. Pennsylvania online casinos generated $242.5 million, up from $212.6 million a year earlier.
Why mobile matters
As legal online gambling continues to expand in the U.S., mobile access is becoming central to the player experience. Multiple September 2026 rankings of top gambling sites emphasize mobile apps, mobile browser play, and platforms that are fast, smooth, and easy to navigate on the go. Leading platforms are built or optimized for iOS and Android, with many also supporting mobile browser play.
FanDuel, BetMGM, DraftKings, and Caesars get frequent mentions, with sources often noting that FanDuel is the clear leader on mobile usability.
The competitive landscape
As of 2026, legal online casino play is limited to seven states: New Jersey, Pennsylvania, Michigan, Connecticut, West Virginia, Delaware, and Rhode Island. This means the market is far from saturated, with plenty of room to expand in the coming years. And unlike online casinos, online sportsbooks are already live in a majority of U.S. jurisdictions, with 39 states plus Washington, D.C., and Puerto Rico offering some form of legal online or mobile wagering.
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Across the seven states that do have legal online casinos, however, brands like FanDuel, BetMGM, DraftKings, and Caesars are vying to shape the exact makeup of the mobile-first U.S. market - one state at a time.
Platforms are tapping into the most convenient way to invest time, attracting a fresh wave of users with intuitive app design and simplified user journeys. The end result? Players are warmer to your content, investing more time and money with your brand.
Optimove reports that the average active player was on site 9.0 days in August 2026, the highest weekly engagement of the trailing year. The average deposit amount reached $865, about 9% above the 12-month trailing average of $790. Optimove also reported that sports betting in the U.S. is up 5% in August 2026 compared with the 12-month trailing average.
At the same time, long-term engagement per player has slightly decreased, which the Optimove report attributes to changing player demographics. As online gambling grows, the pool of engaged players may be expanding faster than the small base of "whales" -- the core gamblers who spend a great deal of time and money on online platforms.
What's next?
Legal online casino revenue is limited to seven states in the U.S., and it's growing there. In such a limited market, state-by-state legalized expansion and mobile access must be a factor for continuous growth.
Upon careful studying of the facts, figures and sources compiled, the conclusion is: The U.S. online gambling market is gaining momentum and maturing as mobile-first access becomes increasingly common and convenient.
